Liquid-tfuel burner



INVENTOR 11694-41# By AT H. C. LITTLE LIQUID FUEL BURNER Filed June 16 Dec. 22, 1925- TORNEY Patented Dec. 22, 192s.

ijJNiTlslD STATES l 1,566,489 PATE-NT .oFFi-CE.

HARRYC. LITTLE, OF LABKSPUR, CALIFORNIA, ASSIGNOR TO BOTAIB BURNER COR- PORATION, A CORPORATION l' NEVADA LIQUID-FUEL BURNER.

To all whom. 'it may concern.:

Be it known that I, HARRY C. LITTLE, n citizen of :the United States, residing at Larkspunin the county of Marin and'State of California. have inventednew and useful Im rovements in. Liquid- Fuel Burners, of

. which the following is a specification.

A soot and carbon.

Another object of this invention is to provide a liquid fuel burner of novel construction and design adapted to produce more complete combustion-of the cheaper grades of fuel oil.

Another object of this invent-ion is to provide a liquid fuel burne which may be conveniently used in ranges, furnaces andf heating systems without ch'angegor alteration in the construction thereof.

A further object ofthe present invention is to provide a liquid fuel burner in. which the damaged or worn out parts may be conveniently replaced without. discarding or replacing the" other parts, thereof.

Further advantages and objects, more or less appa-rent, will be pointed out hereinafter, reference being made to lthe accompanying drawings in which like numerals of reference indicate the same parts throughout the severalviews: 4

Fig. 1 ,is a transverse section view through a liquid fuel burner embodying my invention; l

Fig. 2 is a sectional -view of the liquid fuel burner taken on the line 2-2 of Fig. 1;

Fig. 3 is a sectional viewvof the burner taken on the line of Fig. 1; and

Fig. 4 is a side elevation of the liquidfuel burner installed in a range.

The numeral 1 represents a cylinder ofy any suitable lsize having a plurality ofv fins or'projections 2 extending circumferentially-v around it. .Attached to the cylinder 1 by means of bolts- 3 is a detachable bottom 4 upon the upper surface of which is an annular projection 5, suitable in size to fit around the lower inside edge of the cylinder. The

Application led June 416, 1925. Serial No. 87,496.

bottom 4 is-provided with a hole 6 which allowsthe unburned fuel to escape. The botradial projections 7 which are located on the bottom surface thereof and serve as a means Vfor preventing the bottom from becoming overheated. f

Resting on the upper surface of bottoni 4 and supported thereon by lugs 8 is a combustion plate 9 which is provided on its outward edge with a raised portion 10 extending circumferentially around the same.

The` raised portion 10 serves as av mea-iis for holding the oil on the combustion plate` 9 in the event it -is not burned readily. The

,tom 4 is furthe-r provided with a plurality of combustion plate is also lprovided with an projection 1-1 to which is secured a circular disc 12, that serves as a means to vaporize :the fuel when the .disc becomes heated.

Resting on the cylinder 1 is avtop 13, having a large central opening 14. The top 13' is soshaped that the part thereof adjacent opening' 14, extends slightly downwardlyinto the'combustion chamber. Located on the upper surface of to 13 are a plurality 'l of tangential fins 15 which extend outwardly from the large central opening -14 and serve to provide openings for admitting air i tolarge central opening 14. The fins 15 are provided with threaded holes 16', suitable .in size to receive screws 17 which serve as means-for. securing plate 18 to top A13. The

plate 18 is provided with, on its underneath surface, a plurality of tangential ns 19 -which'are equal in number and size to the ns 15. The plate 18 is provided with a larfge central opening corresponding in size shape to the large central opening 14 in top 13, and with al downwardly projectn part '18 located. around the large centra opening therein. The fins 19 are located in such a position' on the plate 18 that when the plate issecured to top 13 byscrews'17, one

of the lfins 19 is'positioned between two of the fins 15, thus providing openings20 vfor admitting air to opening 14 in a series of *tangential jets, thereby causing a whirling and turbulent motionl of air to beset up in opening 14. The top 13 and plate 18, being disposed downwardly around the large central o nings therein', causes the air admitteifzhrough openingsI 20 to assume a course 1slightlyA downwardly from 4the, horizontal. The plate 18 is provided around its i -Alarge central opening with 'raised portion 21, upon which rests a circular hanged ring 22 the, 'inside fcirculnjference` of which 1s slightly smaller than opening 14. The circular anged ring 22A rests on a top plate 23 which is supported in the furnace,range or heating system by angle" irons 24z as shown in Fig. 4. The cylinder l isprovidedl with a handle 25 which serves vas a convenient means for removing the burner from the inside of the furnace, range or heating system. s A

' he cylinder 1, near ltscentral part, 1s provided on its sides with a plurality of vertical slots or openings 26 which are located A at approximately equal distances `from each other. Adjacent the slots 26 and extending'vertically beside .thesame are a plurality of projections 27, equal 1n num-` ber to the slots, and located on a tangent with the walls of the cylinder 1. Theslots 26 serve to admit airv to the inside of the cyl- Y inder at the sides thereof, while the Vprojections 27 provide a means for causing the admitted air to circulate along the inside cir.-

cumferential edges of the cylinder. T he projections 27 are inclined in an opposite l direction to the position' of fins 15vand 19,

thereby causing the air admitted to the inside of the cylinder through s1ots 26/ to assume a whirling motion in avdirectlon opposlte to the air admitted between the fins v through openings 20.

Projecting outwardly from the cyllnder 1 and extending circumferentially around the same is a projectionv 28 which serves to support a circular damper ring 29 having secured thereto a handle'30. Secured to the damper ring 29 by means of the screws 31 are a plurality of damper segments 32, which serve as a means, when the handle 30 is manipulated, to regulate the amount of f air'admitted into cylinder 1 through slots 26. 'The damper ring 29 is yprovided with a slot 33 -through which a set screw 34 extends 'into a suitable ythreaded hole in pro jection 28.l The slot 33 and set screw v34 serve as a means for securing the damper ring l29 in a xed position when the proper amount yof air to be admitted through slots 26 vhas been once determined. j

Extending inside the cylinder 1 through a hole inthe wall of the same is a feed pipe which is connected to a source of` liquid uel.

The feed pipe 35 serves as a means for delivering liquid fuel tothe' combustion chamber.

The operation of my improved liquid fuel burner may be described briefly as follows:

' jos The entire unit as shown is inserted in the ash pit of the heating apparatus to be heated, as illustrated in Fig. 4of the drawing, care being taken thatmeans for providing a suitable supplyof air exists therein.

Liquid fuelis admitted through' the feed pipe 35 from a. source to the center of cylinder 1 where it fallson disc 12. The vapor disc 12 are preferably made from a special high temperature steel alloy.

Air induced bythe natural draftv of the heating apparatus, `furnace or range, or by othermeans enters the cylinder yl through the openings 20 and 26. The amount of air entering cylinder l 'through openings 26 is regulated by the'manipul'ation of handle 30, connected to ring 29 yand segments4 32. The air passing into the large opening 14 through Iop'enlngs 20 located between fnsl ,and 19,

whirls in a counter clock wise direction while the air entering through openings 26 assumes a whirling clock wise direction inside the cylinder. The two means for admitting air l to the inside of the cylinder causes a turbulent action of air to be set up inside the cylinder thereby producing a more complete combustion of the fuelwith the production of a high degree of temperature. v The air admitted through openings20 in the top, assumes a course, within the combustion cylmder opposite to the course of the air admitted through the openings 26, thereby arresting and stopping the rotation of the gases of-combustion just before they pass throughy the large central opening 14. The air entering the openings 2O in a tangential direction opposite to the course of the air admitted through openings 26, materially aldscombustion within the cylinder for the reason that the rotating movement of the gases therein is stopped before.k they pass through the large opening `14, thus enabling the incoming an' tol thoroughly mix vWith the burning `oil vapors within the chamber 'and thereby completing the process of ycombustion. l

The combustion gases formed inside the cylinder 1, passing outJ` through the vlarge opening 14 .causes the air outside the cylinder l to be drawn inside thereof `through 'Althoughi have shownand described the combustion chamber of the apparatus'to be cylindricalin shape, it'isjevidentthat other lll) suitable .forms may be utilised with equal satisfactlon. Therefore, I do not desire to be limited to the cylindrical shape '.of thel combustion chamber, nor to the shapes of the various parts fitting on the same.v

While I have shown and described the i liquid fuel burner as embodying certain details of construction now best known to me, it will be understood that this is for illustrating the important irinciples of the invention, and that modi cations and changes lmay be made in 4the details of the construction without departing from the spirit of the invention.,` rlhei'eforeal dovnot wish to be understood as limiting myself except as required by the following claims 'when construed in the light of the prior art.

I-Iavng thus describedmy invention, what l claim and desire to secure by Letters Patent I ing from the chamber, and means for delivering liquid fuel tothe combustion chamber.

2. A liquid fuel burner having a combustion chamber, provided with a top and a bottom, means located in the walls of the' combustion chamber, for causing air to be admitted therein in a tangential direction,

separate means located in the top for causing air to be admitted into the combustion .chamber in a'tangential direction, substantially op osite to the` course of the air admitted t rough the walls of the chamber, whereby the rotary movement of the com- -busted ases is stopped before passing from the com ustion chamber, and means for deliver-.ing liquid. fuel to the combustion cham- 3. A liquid Vfuel burner having a combustion chamber provided with a detach-` able topand a detachable bottom, adjustable means for admitting air therein in a tangential direction, separate means located 1n the top for admitting air into the combustion chamber4 in a tangential direction, opposite to the course of the air admitted through t 1e first mentioned means, whereby the rotar movement ofthe gases of combustio 1s stopped before they pass from the combustion:chamber, and means for delivering fuel to tliecombustion chamber.

I 4. A liquid fuel burner having a combustion chamber therein, a-bottom and a to cover, a plurality of openings in the wals of the chamber whereby airis admitted in- 'througli to thechamber in a tangential direction, a plurality of openin s in the top for admitting air in the cham erin .a tangential direction, opposite to the course of air admitted where gases vgenerated in the chamber is stopped before they merge therefrom, means for adjusting the size of one or more of the openings in the Walls of the chamber, and means i for delivering oil to the chamber.-

5. A liquid-I fuel burner, comprising a combustion cylinder, a top on the cylint er provided with a central opening, a plurality of openings located in ,the walls of the com- 4bustion cylinder, a plurality of tangential projections loca-ted on the said walls adacent the last named openings whereby air is admitted to the `inside of the cylinder in va tangential direction, a plurality of tanfins located on the top, al plurality of gential located between the fins, whereby' openings air may chamber in a tangential` direction opposite to the course of the first mentioned air, thereby arresting the rotary movement of the gases within the chamber before they ass throughthe top, and means for deliverlng liquid fuel to the inside ofthe cylinder.

6. A liquid fuel burner, comprising a combustion cyli-nderfhaving a top and. a bottom, a large central opening in the top, a

plurality of separated tangential fins located on the upper surface of the top, a plate having a large central opening and a plurality of separated tangential fins 1othe openings in the said walls,` y the tangential movement of the n be admitted into the combustion cated on its underneath surface, a plurality of openings located between the said' f ins whereby air may be admitted to the inside of the cylinder 'in' a tangential direction, a plurality of tangential projections located on the walls of the cylinder, a plurality of openings in the walls of the cylinder located adjacent the projections whereby air may 'l'lo l be admitted to the inside of the cylinder in atan ential direction, mea-ns for regulating vthe size of the last named openings, and

means for delivering liquid fuel to the'inside of the-cylinder.

7. A liquid fuel burner, comprising a combustion cylinder having a to comprised of two separated plates and a'- ottom, a plurality of tangential projections located on the walls of the cylinder, a plurality of openings located in the walls of the cylinder adjacent the projections whereby airy may be admitted to the vinside of the cylinder, 'means for regulating the size of4 the openings, a plurality of tan e'itial fins located in the top between t e two plates thereof, a lurallty of lopenings located bctween the ns whereby air may be admitted to the inside of the cylinder in a tangential direction, and 'means for delivering liquid fuel `to the inside ofthe cylinder.'

" 8. liquid-fuel burner, comprising'a com f bustion cylinder having a top and a-bottom, plurality of projections located 'onthe fu'elvto theinside of the cylinder.-

walls of'the cylinder, a pluralityo open" 'rings located in the said Walls adjacent the 'projections whereby air may be admitted to the inside of the cylinder, in aI tangential direction, means whereby the 'size-of the openings may be regulated, `means' located Awithin the topfor admitting air to the inside of the cylinderin a tangential'direction', opposite to the course 'of the lair admitted' through the first named openings,- whereby the rotaryinovemcnt of gases generated inside the cylinder is stopped near thetop of cylinder, andmean's for `delivering liquid V9. A liquid fuel burner, comprising a combustion cylinder having a lbottomand a top comprised of two plates 'and provided with a central opening, 'a plurality off'openings loca-ted in the walls of the cylinderwhereby air may be admitted into the combustion cylinder in a tangential direction, a pluralityof openings between'the two plates of the top for admitting air into the combustion chamber, in a'tangential direction opposite to the course of the-air -admitted through the first mentioned openings,

whereby the tangential movement of the gases generated inside the combustion cylinder may be stopped before they pass through the central opening of the top, and means for delivering vfuel to the inside of the cylinder.

lOwA liquid fuel burner, comprising a combustion. cylinder having a bottom and a cated between -thetWo plates of the ytop for admitting air into'theA combustion chamber in a tangential direction opposite to the course of the air admitted throu h the openingsin the walls offt'he cylin er, whereby the tangential movement of the gases generated within the cylinder is arrested at a point in the combustion cylinder before they pass therefrom through the central opening in the top,i and ymeans for delivering liquid fuel tothe combustion cylinder.

i HARRY-C. LITTLE.

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